Typewriting machine



2 Sheets-Sheet Dec. 7 1926.

J. A. VB. SMITH TYPEWRITING MACHINE Filed March 17, 1926 Dec 7 1926.

J. A. B. SM|TH TYPEWRITING MACHINE 2 Sheets-Sheet 2 Filed March 1'7, 1926 /f7 Vew far Patented ec. 7, M225.

JESSE A. B. SIVITH, 0F STANFORD, CONNECTI CUT, AssIGNoR To UNnnR'Woon TYPE- WRITRR COMPANY, orjNEW YORK, N. Y., A CORPORATION. ory DELAWARE. L

TYPEWRITING MACHINE.'

Application led March 17, 1926. Serial No. 95,222.

rlhis inventionrelates to sound-deadening casings for typewriting machines, and more particularlyto means for feeding a continuous web to the platen of ka typewriting. machine enclosed in the casing. j

In certain classes of work, such as, for instance,l when typing telephone messages, it is customary to type the message rapidly, directly as it is being received over the telephone. 1n such cases, it is of importance that the machine be operated in a sounddeadening casing, otherwise the noise arising from the operation ofthe machine is liable to interfere with the clear reception of the message. The work requires the use of a roll or pa'ck of paper web, Which, according to the present invention, isA inserted at the rear of the casing, and then passed around the enclosed platen, and thence out again to the exterior of the easing. The typed messages are torn off by a knife, which may be secured to the wall of the casing at the delivery side thereof. A difficulty arises owing to the relative movement between the carriage and the walls of the casing, since the web which is carried by the carriage drags along the Walls of the casing One of the features of this invention relates to means for obviating this difficulty.

'To this end, it is proposed to slot the rear wall of the casing and to extend through the slot, to the exterior. thereof, a pair of web-guiding and supporting plates carried by the carriage, and to pass both the incoming and outgoing portions of the worksheet between said plates, thereby preventing the vwork-sheet from contacting with the sides of the slot.

yAnother feature relates to means for severing the typed forms or portions of the web into form' length without necessitating the opening of the casing cover. According to this feature of the invention, the web is torn off, after typing, against a r knife fast to the edge of the slot.

According to the method of handling the work in this invention, the web is passed over a rea'r table, which extends through the slot in the wall of the casing, and is guided down a chute at therear ofthe platen, and is then inserted around the platen and over a front table, which extends also to the outsider of the. casing through the same slot through which the rear table protrudes. `Over said front table there is provided ay guard which serves as a means for preventing contact between the typed forms and the upper side ofthel slot in the casing, which, for the purpose of preventing thefleakage ofsound-waves, may be. provided with slot-sealing devices fast to the edges ofthe slot. After.` typing each form, the platen is rotated by meansof thev line-space handle, and then the typed form is torn .off yagainst the knife, at the delivery side of the slot.v -l

From the foregoing description of operation, itwill bel noted that the `forms vmay be typed withoutnecessitating the opening of the cover of the sound-deadening casing, as has been the practice heretofore. However, the cover may ,be displaced when desired by just swinging it rearwardlyfin the regular way. It will also be noted,` that in order to further increasethe efficiency of the device, a shiftless machine is provided, which, as is well known, is much easier `to operate at a high rate of speed, sincethe operative is not distractedby the case-shifting operation.

" Other features and after appear.

In the accompanying drawings, Figure 1 is a cross-sectional view, in elevation, and shows the inventionapplied to an Underwood typewriting machinein a sounddeadening casingL l e ,v Figure ,2 is va similar view, showingvthe coverv inits partly-open position.

Figure 3 is a cross-sectional. view through advantages will hereinline 41-4 of Figure 1, and shows the carriage moved all the .way to one end of the casing.

Figure 4: is a cross-sectional view through the line 5-5 of Figure 1, and shows the rear table and theslot-sealing devices..

The .Underwood typewriting machine with which this invention is. illustrated includes a frame 10 having a forward extension' 11, for enclosing banks of keys '12, whichl keys, when operated, are effective to swing type-bars 13, to n' strike a platen lt.. Said platen is revolubly mounted on .a platenshaft 15, and may be rotated by nieans ofV finger-pieces 16, and also by means of a linespace lever 17. The platen is carried by a carriage-frame 18, which isv mounted `for letter-space travel along. rails 19, carried by the frame 10. l

the use of the machine, there lis provided a.

sound-deadening casing, which completely encloses the machine, except' for the keyboard-extension 11 and the line-spacelever 17, which protrude to the exterior thereof.

Said casing includes a lower. member 2O and'A a hood or cover 21, which is swingable on a hinge 22 fast to the lower member and to the cover. The lower member is supported by a base-plate 23, upon which. the feet of the machine rest. 1

In order tofacilitatel the handling' off a long web without necessitating1 thedisplacement of thelcover, thereislprovided al rear table24 mounted on a platen-frame 25 by means of supporting` brackets 26. Said table/extendsV tothe outside of the casing through' aj slot 27, which extends substantially the. full width of the cover. The platen-frame 25 carries also a fronttable 28, which is fast to abracket 29 by means of rivets 30.y Said front table carries-a deflectingy plate 32 fast thereto by means of'rivcts 33, which plate co-operates with the rear table 24 to forma throat through which a -work-she'etv 50,- whichv is drawn from a-roll 51 at the rear of the'machine, is passed and isconductedto'the platento'be engaged by feed-rolls 31; The work-sheet is heldl in f engagement with the fronttable by` means of aiinge'r 52, and, at' its uppermost end, the front* table is providedl with a plate 34, Whichplatejis spaced` from the plate 32just enough to permit the free feeding of the work-sheet therebetween.` SaidA plate 32 protrudes to the exterior of the casing through the slot: 27. 1n order 'to prevent the emission of sound through theslot 27, there are providedslot-sealingdevices, one at each sideof the slot: andbearingrespectively on the under. sidev of therear table24 and' over the' plate 341 Said sealing devicesmayv be made of flat'rubber strips 33A enclosing a rubber tubing 37, the strips. being fast; to the sides of the` slot by meansof screws `38: 1t will beunderstood that'the edgesV 53 of the rear table 24am-curled up as shown in'lfigL ure 4, thereby providing aguardf'tofprevent the'edges of-'the plate 34 from engaging anddamaging the slot-sealing devices.

When, for any reason, it' is desiredto open the'cover, the same isswung rearwardly to a position as shown'inligure 2, and, when so doing, the cover'is moved away from the tables mountedA on the carriage, as shown in Figure 2. AIn order to facilitate the' holding of the slot-sealing devices to the sides ofthe slot, there are providedplates 39 and 40,

which are fastened to the cover by means ofthevscrews 38.'

In orderl to facilitate the operation ofthe machine, it is proposed vto luse anUnderwoodi ofthe shiftlesstype, tha-tis to say, amachine Which is operated alwaysin the same case,andhas -onlyone row off' capital letter' typesl 41. Suena; machine can be operatedV at a much higher speed,for the reason that the operator is not distracted` by. the caseshifting operation. Another advantage of using such type of. machine is to facilitate reading of the typedmatter.

After typing each form, the platen is rotated by operating the line-space lever 17, and the typed form is fed to the exterior of the casing. Then Vthe form is torn ofi" against a knife 42, whichis fast to the upper edge of the slot 27 by means ofi the screws 38 and an intervening angular strip 43.

For the purpose of preventing the emissioni offr sound through'a slot* 44 through which the line-space lever 17 protrudes, there are provided slot-sealing devices fast to the cover and tothe casing by means of screws 46. Y

lnorder.L to render typingv visible inside of the casing, the Underwoodcasing isusually provided with a glassv panel 47, which is fast to the cover by means o-fclips'43 and 49, the latter being held by means of the screws 46, which holdthe upper slot-sealing device 45.

Variations mayv lie-resorted towithin the scope ofthe invention, and portions ofthe improvements may beused without others.

Having thus described my invention, 1 claim:

l. 1n a combinedsound-deadening casing and typewriting machine,y the typewriting machine having a platen and a movable carriage, the sound-deadeningfcasing having a slot at the rear thereof, saidv slot extending substantially lthe full width of the casing, and chute carried by said carriage, said chute protruding through: said slot to: the exterior of the casin'gin a manner toguide a continuous work-sheet, from the exterior ofthecasing to the platen and then out lto the exterior ofthe casing, so asgto prevent the work-sheet from contacting with the sides of the slot.

2. 1n a combinedsound-deadening casing and typewriting machine, the typewriting machine'havinga platen `and amovable carriage, the sound-deadening' casing'havingy a slot at the rear thereof said' slot' extending devices being effective to prevent theemis sion of soundfthrough theslot'.

3. 1n a combined'soundedeadening casing and typewriting' machine, the typ@writing` machine having a platen and a movablecarriage, the soun'd-deadening casing having a slot att-he rearthereof, said siotaextending' substantially the full width of the casing, a chute carried by said carriage, said chute protruding through said slot to the exterior of the casing in a manner to guide a continuous work-sheet, from the exterior ofthe casingto the platen and then out to the exterior of the casing, so as to prevent the work-sheet from ycontacting with the sides of the slot, and a fixed knife arrangedalongside of the slot and extending substantially the full width thereof, said knife being effective for severing typed portions of the web thereagainst.

Y 4. In a combined sound-deadening casing and typewriting machine, the latter having a platen, a movable carriage, a lchute at the introductory side of the platen for conduct-- ing a web to the platen, said'chute protrud ing to the exterior of the casing through a slot in the wall of the casing, said slot extending substantially the full width of the casing to permit the unobstructed travel of the carriage, and a guide-plate at the delivery side of the platen for guiding the typed portionl of the web, said guide-plate extendingV to the exterior of the casing through said slot in a manner to prevent the web from contacting with the sides of the slot.

5. In a combined sound-@leadening casing and typewriting machine, the latter having a platen, a movable carriage, a chute at the introductory side of the platen for conducting a web to the platen` said chute protruding to the exterior of the casing through a slot in the wall of the casing, said slot extending substantially the full width of the casing to permit the unobstructed travel of the carriage` a guide-plate at the delivery side of the platen for guiding the typed portion of the web, said guide-plate extending to the exterior of the casing through said slot in a manner to prevent the web from contacting with the sides of the slot, and means for preventing the emission of sound through said slot, said means including slot-sealing devices fast to the edges of the slot, the slot-sealing devices being resilient to permit the Ifree movement of the carriage.

6. In a combined sound-deadening casing and typewriting machine, the latter having a platen, a movable carriage, a chute at theY introductory side of the platen for conducting a web to the platen, said chute protruding to the exterior of the casing through a slot in the wall of the casing, said slot extending substantially the full width of the casing to permit theeunobstructed travel of the carriage, a guide-plate at the delivery side of the platen for guiding the typed portion of the web, said guide-plate extending to the exterior of the casing through said slot in a manner to prevent the web from contacting with the sides of the slot,

and means for severing the typed forms ofy the web, said means including a'knifeh'aving a -straig'ht-cutting edge, 4said knife extending substantially the full width of the casing"and being secured V,to one side of thefslot.' l

7. In combination, a typewriting machine and a sound-deadening casing, the typewriting machine having a'revoluble' platen, a travelingcarriage, and a double chute; for conducting a Iweb from the exteriorof the casing to the platen and Ifrom'the platento the exteriorof the casing, the casing having a lower member and an upper member, the upper member having a slot vextending substantially the full'widththereof, through which slot'the chuteprotrudes to the exterior of thecasing, said slot'being arranged ina manner to permitthe unobstructed swing of the upper member in any position of the carnage.. t, v 8. In co'mbinatiom'a typewriting machine and a sound-deadening casing,-the typewriting machinehaving a revoluble platen, a traveling carriage, and a double chute for conducting a web from'the exterior` of the casing to the platen andffrom' the platen to the exterior of the casing, the casing having a lower member and an upper member, the upperl member having a slot extending substantially the'full width thereof, through which slot the chute protrudes to the exterior f the casing, and slot-sealing `devices for engaging the sideso'f the chute ina manner to prevent the emission of sound through the-slot. e. e `i 9. In combination, a typewriting machine and a sound-deadening casing, the typewritingmachine having a revoluble platen, a traveling carriage, and a double chute for conducting aweb from the exterior of the casing to the platen and from the platen to the exterior of the casing, the casing having i a lower member and an upper member, the upper member having a slotv extending substantially the full width thereof, through which slot the chute protrudes to the exterior of the casing, slot-sealing devices for engaging the sides of the chute in a manner toprevent t-he emission of sound throughthe slot, anda knife, fast to the edge of the slot, for severing the typed forms.

l0. In combination, a typewriting machine and a sound-deadening casing, the'typewriting machine having a revoluble platen, a

traveling carriage, and a'double chute for conducting a web from the exterior of the casing to the platen and from the platen to the exterior of the casing, the casing having a lower member and an upper member, the upper member-having a slot extending substantially the full width thereof, through j which slot the chute protrudes to the exterior of the casing, said slot being arranged in a manner to permit the unobstructed swing of the upper member in any position.

of the' carriage,v saidlehute beingJ2 curved, at the lineacontacting with. the. edge ofthe slot, saidf ourvebeing radial-1 to the -line of swingk of.- theV upper member,A thereby permitting the free swinging of the upper-` memberaWa-yf-rom the-ohute.-

1l. A sound-deademngCasing:for a typeble platen, aV movable carriage, andf means borne by said-carriage for guiding; aY oontinuousl Work-sheet fromv the'y exterior of the casingto 'the platena and from the platen-to the; exterior of the easing, saidv means inoluding; a double chute protruding through aslot, in the easing tothe' exterior thereof,

saidl ehutebeingV effectivetopreventthe Work-'sheet iirom1contactingwith, the sides of the'f slot. Y

12: soundi-deadeningeasing57A for aa type-- Writing machine, the latter having a revolu- Yble' platen,l az movable carriage, ,means borne bvy said carriage for)` guiding. a continuous Y Workf-sheet; from: the ex-teriorI oi'v the easing bleplaten, amovable carriage, means borne by said` carriage for guiding a2 continuous Worksheet from the exterior. of the: easing to the. platen, andrfornktheV platento the ex.- terior off` the casing-said means: includingat double chute protruding through a slotC in the easing to the exterior thereof-,said'chute bei-ng eil'eetive to prevent the Work-sheetfrom contact-ing,v with thef sides of the slot,y and` mean'sffor p reventingL the emissione of sounclthrougli said slot, said last-*mentionedmeans` including flexible` slot-sealing devicesastto the edges ofthe slot andvcontaoting. with the Ysidesof the Chute 14h A vsounddeadening easingv for. a-type-l Writing machine,v the lat-ten'liavi-ng, a f revolu-` ble; platen,` a movable carriage, means borne by saidl carriage for guiding -a continuousI Work-sheet romrthe exterior of the easing to the platen, and from the plat-ente the exV terior of the casing,4 said means including a, double chute protruding through aslot in the'casing to the' exterior thereoffesaid ehute` to the edges oitthe slot and oont-aetingkwith the. sides of the chute, and' means including; at straight knife, fast/,to the upper e'd'ge'of. said slot, for severing the-:typed'portionsf ol' the' Work-sheet.

JESSE A. B;y sri-1TH;4 

